Patents Assigned to Everpure, Inc.
  • Patent number: 5833849
    Abstract: A spout-mounted water filter assembly suitable for use with a shallow sink having a short necked spout. The water filter assembly includes a water filter unit and an extension pipe which provides additional vertical clearance between the base of the sink and the outlet of the filter unit. The extension pipe may further be dimensioned to provide additional clearance relative to an inner edge of the sink in order to prevent interference between the water filter unit and the sink. The water filter assembly of the present invention is versatile and may be configured in a variety of orientations to fit a variety of sink/faucet combinations.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: November 10, 1998
    Assignee: Everpure, Inc.
    Inventor: Richard D. Primdahl
  • Patent number: 5653871
    Abstract: The present invention includes a liquid filtering filter head configured to receive a filter cartridge closure member, where the closure member has at least one seal member. The filter head has a generally cylindrical, inverted cup-like structure defining a chamber configured to receive the closure member and two openings in fluid communication with the chamber. Furthermore, the filter head features a guide for guiding a seal member as the closure member is inserted into the chamber, so that the seal member is prevented from becoming caught in the openings.
    Type: Grant
    Filed: April 24, 1996
    Date of Patent: August 5, 1997
    Assignee: Everpure, Inc.
    Inventor: Jack W. Thomsen
  • Patent number: 5527470
    Abstract: A method for monitoring and controlling water quality in a water phase changing device, such as an ice maker, having a water inlet, a water outlet, a reservoir configured for retaining a supply of water and being in fluid communication with the inlet and the outlet, and a flow controller for controlling the flow of water into the device, such as an ice maker, includes the steps of monitoring TDS concentration of water retained in said reservoir, and actuating at least one of a water input controller and a water dump controller to adjust the composition of the water in the reservoir when the monitored TDS concentration exceeds a preset TDS target concentration.
    Type: Grant
    Filed: November 16, 1994
    Date of Patent: June 18, 1996
    Assignee: Everpure Inc.
    Inventor: Richard Suda
  • Patent number: 4956086
    Abstract: A filtering system for water treatment including a head member having inlet and outlet ports and replaceable, disposable filter cartridge for insertion into the head member, the filter cartridge including a dual lug retaining system for retaining the filter cartridge in the head member, one of said lug retaining systems being disposed on the pressure vessel of the filter cartridge and the other of said lug retaining systems being disposed on the closure member of the filter cartridge.
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: September 11, 1990
    Assignee: Everpure, Inc.
    Inventors: Jack W. Thomsen, Perialwar Regunathan, John W. Tadlock
  • Patent number: 4904382
    Abstract: A filtering system for water treatment incorporating one or more filter assemblies each including a head member having fluid inlet and outlet ports, a replaceable filter cartridge closed at one and the other end being insertable into said head member, said head member including a manifold member and a filter cartridge supporting member operatively associated with the head member and movable relative to the manifold member between a load-unload position and an operating or running position, means for securing the filter cartridge against rotation in the filter cartridge supporting member, and seal means between the manifold member and filter cartridge supporting member for sealing off both the influent and effluent when the filter cartridge supporting member is in the load/unload position.
    Type: Grant
    Filed: November 23, 1987
    Date of Patent: February 27, 1990
    Assignee: Everpure, Inc.
    Inventor: Jack W. Thomsen
  • Patent number: 4857189
    Abstract: A filtering system for water treatment including a head member having inlet and outlet ports and a replaceable, disposable filter cartridge for insertion into the head member, the filter cartridge including a dual lug retaining system for retaining the filter cartridge in the head member, one of said lug retaining systems being disposed on the pressure vessel of the filter cartridge and the other of said lug retaining systems being disposed on the closure member of the filter cartridge.
    Type: Grant
    Filed: October 13, 1988
    Date of Patent: August 15, 1989
    Assignee: Everpure, Inc.
    Inventors: Jack W. Thomsen, Perialwar Regunathan, John W. Tadlock
  • Patent number: 4770770
    Abstract: A water supply system for use in connection with a variety of water using equipment such, for example, as commercial ice makers and commercial steam cooking equipment wherein the water supply system utilizes a reverse osmosis unit thereby providing water of low mineral content to be used as product water in the equipment and at the same time utilizing the waste water generated from use of the reverse osmosis unit to provide cooling or condensing water for the same units to which the low mineral water is supplied.
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: September 13, 1988
    Assignee: Everpure, Inc.
    Inventors: Perialwar Regunathan, Dale A. Squier, John W. Tadlock
  • Patent number: 4759474
    Abstract: An improved fluid dispensing system for use in dispensing beverages including unitary fluid filter cartridge adapted to be immersed in fluid to be dispensed, the fluid filter cartridge including a cannister having inlet and outlet openings in the lower end thereof, a filter septum in the filter cartridge connected to the outlet, adsorptive material disposed in the cartridge, a check valve controlled vent opening in the upper end of the cannister, and a riser stack connected to the check valve controlled vent opening.
    Type: Grant
    Filed: June 24, 1985
    Date of Patent: July 26, 1988
    Assignee: Everpure, Inc.
    Inventors: Perialwar Regunathan, John W. Tadlock, Gregory L. Johnson
  • Patent number: 4725354
    Abstract: A filtering system for water treatment including a head member having fluid inlet and outlet ports, a bracket member adapted to be secured to stationary support means, the head member being secured to the bracket member, a disposable filter cartridge closed at one end and being equipped at its other end with a closure member, the closure member having inlet and outlet passages formed therein to communicate with the interior of said filter cartridge, the closure member portion of the filter cartridge being insertable into the head member, its inlet and outlet passages formed so as to communicate with the inlet and outlet ports in the head member, the closure member being adapted for easy insertion into and withdrawal from the head member.
    Type: Grant
    Filed: March 7, 1986
    Date of Patent: February 16, 1988
    Assignee: Everpure, Inc.
    Inventors: Jack W. Thomsen, John W. Tadlock
  • Patent number: 4654142
    Abstract: A filtering system for water treatment including a head member having fluid inlet and outlet ports, a bracket member adapted to be secured to stationary support means, the head member being secured to the bracket member, a disposable filter cartridge closed at one end and being equipped at its other end with a closure member, the closure member having inlet and outlet passages formed therein to communicate with the interior of said filter cartridge, the closure member portion of the filter cartridge being insertable into the head member, its inlet and outlet passages formed so as to communicate with the inlet and outlet ports in the head member, and coacting locking means formed on the head member and the bracket member to secure the filter cartridge in place during operation of the filter system and also permit easy insertion of the closure member into and withdrawal of the closure member from the head member.
    Type: Grant
    Filed: November 18, 1985
    Date of Patent: March 31, 1987
    Assignee: Everpure, Inc.
    Inventors: Jack W. Thomsen, John W. Tadlock
  • Patent number: 4645601
    Abstract: A reverse osmosis sytsem for water treatment including a head member adapted to be fixedly mounted in a fliud supply line, an integral disposable reverse osmosis unit inserted into said head member, said osmosis unit including a pressure vessel, an end member attached to said pressure vessel and a reverse osmosis membrane module disposed in said pressure vessel and operatively associated with said end member.
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: February 24, 1987
    Assignee: Everpure, Inc.
    Inventors: Perialwar Regunathan, Jack W. Thomsen
  • Patent number: 4594361
    Abstract: Polybromide resin beads for disinfecting potable water are stabilized as to bromide content by:(A) initially charging excess bromine into an aqueous slurry of quaternary ammonium amine exchange resin beads;(B) removing external moisture to provide moist sticky beads;(C) passing gaseous drying agent at controlled temperature and velocity effective to gradually remove internal moisture and excess bromine; and(D) continuing the gradual drying until dry, free-flowing beads having less than 5% water and 17 to 47% bromine are obtained.
    Type: Grant
    Filed: November 26, 1984
    Date of Patent: June 10, 1986
    Assignee: Everpure, Inc.
    Inventors: William H. Beauman, Dean J. Jarog, Steven H. Micklin
  • Patent number: 4548227
    Abstract: A chemical feeder device for treatment of influent liquid and designed for relatively free maintenance being free of moving parts and including a head member to be disposed in a liquid supply line, a vessel detachably connected to the head member and a disposable, replaceable chemical feeder cartridge also attached to the head member and disposed inside the vessel, the cartridge being a unitary structure including pre-inserted chemical material, built-in capillaries, an inlet check valve. The device is designed to feed a concentrated chemical solution into a stream of flowing liquid at a constant, very low resulting chemical concentration independent of liquid pressure, flow rate and interruptions in flow.
    Type: Grant
    Filed: September 15, 1983
    Date of Patent: October 22, 1985
    Assignee: Everpure, Inc.
    Inventors: Perialwar Regunathan, John W. Tadlock, Dean J. Jarog
  • Patent number: 4440200
    Abstract: The present invention relates to an improved liquid dispenser machine for automatically dispensing small, medium or large cups of liquid and eliminates the oscillator required in prior art systems as well as provides feedback to prevent chattering and oscillatory operation of the liquid dispenser valve and also includes a predetermined time delay in the timing circuit which allows fast change of cups without starting the timer.
    Type: Grant
    Filed: May 12, 1981
    Date of Patent: April 3, 1984
    Assignee: Everpure, Inc.
    Inventors: Donald P. DeVale, Joseph Wieser
  • Patent number: 4437499
    Abstract: A computer controlled sensor for a beverage dispenser in which a micro-processor receives inputs from one or more sensors for detecting the size of a beverage cup which is to be filled by a dispensing unit and which, depending upon the size of the cup, energizes a dispensing valve so as to fill either a small, medium or large size cup for example. A memory is provided which controls the micro-processor in response to the detected size of cup which is to be filled and a Hall sensor is utilized for initially setting the quantity of liquid which is to be dispensed.
    Type: Grant
    Filed: May 11, 1981
    Date of Patent: March 20, 1984
    Assignee: Everpure, Inc.
    Inventor: Donald Devale
  • Patent number: 4396512
    Abstract: Improved bacteriostatic filter media mixture comprising specially treated, dried, silver-bearing, highly purified, inert material in particulate or fibrous form, such as cellulose fibers, mixed with specific proporations of powdered, activated carbon filter material. Bacterial growth in and on the filter media is inhibited by silver ions slowly eluted or dissolved from the segregated, silver-treated cellullose fibers uniformly interspersed among the carbon filter material. The treated cellulose in the mixed filter media is in an amount sufficient to provide overall filter bacteriostatic effect to passs EPA Office of Pesticides Regulations FR 41:152 for home water filtration use, and to have improved coliform bacteria suppression after stagnant periods. Adsorptive and precoatability properties of the carbon are not inhibited, and carbon densification, leading to fall-off, does not occur.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: August 2, 1983
    Assignee: Everpure, Inc.
    Inventors: William H. Beauman, P. Regunathan, Dennis I. Prepejchal
  • Patent number: 4006752
    Abstract: A fluid flow system including automatic feeder control for supplying chemicals to fluid flowing through a conduit and utilizing a Hall Effect detector which supplies an output to a digital counter which feeds a comparator that operates a timer and electronic switch to control the chemical feeder.
    Type: Grant
    Filed: October 24, 1975
    Date of Patent: February 8, 1977
    Assignee: Everpure, Inc.
    Inventor: Donald P. De Vale
  • Patent number: D503772
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: April 5, 2005
    Assignee: Everpure, Inc.
    Inventors: Rajendra K. Mody, Martin K. Moore, Ian Tinkler
  • Patent number: RE34031
    Abstract: A filtering system for water treatment including a head member having fluid inlet and outlet ports, a bracket member adapted to be secured to stationary support means, the head member being secured to the bracket member, a disposable filter cartridge closed at one end and being equipped at its other end with a closure member, the closure member having inlet and outlet passages formed therein to communicate with the interior of said filter cartridge, the closure member portion of the filter cartridge being insertable into the head member, its inlet and outlet passages formed so as to communicate with the inlet and outlet ports in the head member, and coacting locking means formed on the head member and the bracket member to secure the filter cartridge in place during operation of the filter system and also permit easy insertion of the closure member into and withdrawal of the closure member from the head member.
    Type: Grant
    Filed: March 22, 1989
    Date of Patent: August 18, 1992
    Assignee: Everpure, Inc.
    Inventors: Jack W. Thomsen, John W. Tadlock
  • Patent number: RE34050
    Abstract: A filtering system for water treatment including a head member having fluid inlet and outlet ports, a bracket member adapted to be secured to stationary support means, the head member being secured to the bracket member, a disposable filter cartridge closed at one end and being equipped at its other end with a closure member, the closure member having inlet and outlet passages formed therein to communicate with the interior of said filter cartridge, the closure member portion of the filter cartridge being insertable into the head member, its inlet and outlet passages formed so as to communicate with the inlet and outlet ports in the head member, the closure member being adapted for easy insertion into and withdrawal from the head member.
    Type: Grant
    Filed: June 1, 1990
    Date of Patent: September 1, 1992
    Assignee: Everpure, Inc.
    Inventors: Jack W. Thomsen, John W. Tadlock